Bobbin stripper



Oct. 16, 1934. Q TERRELL 1,977,097

BOBBIN STRIPPER 7 Filed Sept. 16, 1951 2 Sheets- Sheet l Oct. 16, 1934. LL 1,977,097

BOBBIN STRIPPER Filed Sept. 16, 1951 2 Sheets-Sheet 2 1 I JNVENTOR. 16' 24 g 62 MM-U21 CZ; 5 l I BY W N i n a ATTORNEY.

Patented Got. Id, 1934 r UNITED STATE Prsr trice- BOBBIN STRIPPEB.

Edgar A. Terrell, Charlotte, N. 6., assignor to The Terrell Machine Company, Charlotte, N. (3., a corporation of North Carolina Application September 16, 1931, Serial No. 563,137

24 Claims. (01. 28-20) The invention relates to bobbin-strippers emping blades (or certain of them) and to other ploying scrapers or blades as the principal stripelements of the machine. In an alternative form, ping elements; and especially to improvements the Whole guide-block and cover-plate assemblies in the means adjacent, or associated with the are mounted for adjustment as a unit, carrying l. blades, for supporting or locating the bobbins in with them. the bobbin-locating formations. Both ian initial stripping position, and in proper rela-. forms are fixed in their operative position after tion to the blades and other parts of the machine. being appropriately adjusted.

A principal featureis the provision of adjust- The characteristics and advantages of the in-1 able positioning means cooperating with the bob.- vention are further sufriciently explained in con-' 1.0 bin-barrel and head, and also having a cooperanection with the followingv detail description of 65,

tive relation to other elements of the machine, the accompanying drawings, which show a repto locate the bobbin inproper relation to the resentative embodiment. After considering this stripping blades and otherelements which act example, skilled persons will understand that upon it as it moves to initial strip-ping posimany variations may be made without departing 15, tion and is moved therefrom in the early stages from the principles disclosed; and I contemplate 70;

of the stripping action. employment of any structures that are properly It is of great importance to position the bobbin within the scope of the appended claims. so that when the scraping blades are advance In the drawings,-

toward the barrel they engage in front of the mass Fig. l is a plan view of a bobbin stripping otwaste thereon, i. e. between the head and the machine including stripper-blade supporting and 75 waste, to insure removalof the entire amount of guide means embodying the invention in one Waste. It is likewise of the greatest importance form, parts of the machine not essential to an that the bobbin-head shall not enter between the understanding of the invention being omitted. blades, as otherwise breakage of the blades and Fig. 2 is a plan view of the two stripper assemdamage to the bobbins wouldresult through the blies, enlarged.

endwise stripping movement given to the bobbin Fig. 3 is a plan View of a cover-plate. by the pulling .jaws. The present adjustable Fig. 4 is a plan view of a baseor guide-block. positioning, means provide for such correct and Fig. 5 is a side elevation of the cover-plate. accurate positioning of the bobbin in relation to Fig. 6 is an end view of one guide-block, with .30 the blades, and also are readily adaptable to a cover-plate thereon. 8.5-, difierenttypes of bobbins or to different diam- Fig. 7 is a front elevation of certain of the eters of bobbin-barrels and heads. parts of Fig. 2. V I

As here shown, the invention features are asso- Fig. 8 shows the bobbin-positioning devices of ciated or combined with the stripping blades the invention in combination with alternative guide-blocks and other related parts of. machines head-locating devices. I 913;

.40 tion or mode of operation. cluded in a stripping machine of general organi 9 of the types disclosed in U. S. patents to E. A; Figs. 9 and 10 show in plan and end elevation, Terrell, No. 1,740,127 and No, 1,7 i0,128, dated respectively, an alternative form in which the Dec. 17, 1929, but are also adapted or adaptable guide-block assembly is adjusted as a unit. p, to other machines of generally similar organiza- The invention structure is here shown as inis more particularly-describedvwith reference zation substantially as shown in Patent No. to machines of the types referred to, the inven 1,740,127 above referred to, a principal charace tion in its broadest aspect contemplates all means teristic of which is that the bobbin is carried from which may be adjustably mounted to engage an initial stripping position through the entire intermediate their ends bobbins of differing dirange of stripping movement by a pair of pulling mensions so as to present them properly to the grippers; but it is equally well adapted to mastripping instrumentalities; in its illustrative emchines of the type shown in the other cited bodiments it consists in the preferred form of patent, No. 1,740,128, a principal characteristic adjustable cover-plates on the scraper-blade of which in distinction from the one first-men- 5 guideblocks,' these plates having confronting tioned, is that in the stripping action the bobbin 1G5 edge or face formations to receive between them is first advanced by a pusher, and such advance the bobbin barrel at a point thereon adjacent is then completed by pulling grippers; or it may the head, and also cooperating with the head be employed where the bobbin is given its moveor the fillet between the head and barrel, to loment relative to the stripping blades by a pusher 55, cate .the bobbin in proper relation to the stripalone as in Patent No. 1,761,695.

Referring now to a machine of the type first above mentioned:As here sufficiently shown in Fig. 1, this includes main frame side-pieces or rails 1 slidingly supporting a pull-head 2 having bobbin-head-gripping jaws 3, with means for reciprocating the head and operating the jaws. At opposite sides of the center line, stripper-blade and bobbin-head positioning means are symmetrically located on the side rails 1, each such means being substantially a unitary assembly, designated as a whole as 4. Bobbins are supplied successively by an arcuate feed-chute located on the side rails (as fully shown and described in the cited Patent No. 1,740,127, and here omitted), the bobbin-head and bobbin-barrel being located between confronting ends of the stripper-blade assemblies; the head is then grasped by grippers 3 and the bobbin is pulled lengthwise a distance greater than its length, to perform the stripping action in a manner fully explained in said patent. In some cases wiper-blades 5 having wiping elements 6 are provided to remove waste which may not be completely removed by the blades. A shutter 7 may also be provided to position the head in relation to the blade assemblies 4 or elements thereof; otherwise when a feed-chute with a guard such as shown in cited Patent No; 1,740,128, or guards of the nature of those form ing the subject-matter of my co-pending application Serial No. 558,530, and illustrated in part in Fig. 8, are used (as later referred to) the shutter is omitted. Patent No. 1,740,127 is referred to for a further understanding of the complete organization of the present machine.

The two stripper-blade assemblies (Fig. 2), embodying the invention in its first form, are shown in detail in Figs. 2 to 7. These may be substantially identical except for symmetrically reversed shapes or positions of parts on account of location at opposite sides of the machine, and it is sufficient particularly to describe one of them, as follows:

A baseor guide-block 10 has means such as lugs or ears 11 with bolt-holes 12 for securing it to a frame-member 1, and also has vertical spaced side-walls or flanges 13 and 14. Each baseor guide-block has a cover-plate 15 provided with a flange or tongue 16 depending from its under face and located between the side-walls or flanges 13, 14, of the base, and spaced from said walls, as best shown in Fig. 6. Margins of the plate overlie said base walls, and these plate margins have aligned slots 7, elongated in the lengthwise direction of the plate. Screws 18 pass through the slots and engage in threaded holes in the base walls, permitting adjustment of the two cover-plates in a lengthwise direction, that is toward and from each other and the center line of the machine. After adjustment, the plate is secured to the guide-block by tightening the screws. A narrow stripping blade 19 is mounted in the guide-channel of rectangular cross-section defined by the cover-plate with its flange 16, the adjacent face of wall 13 and the upper surface of the base, and a relatively wide or thick stripper-blade 20 is similarly mounted in the channel provided between the cover flange and the other base wall 14.

The guide-block has at its inward end a beveled face 22, providing in cooperation with the similar formation on the opposite guide-block a support for the bobbin-head at the side of the stripper-blade assembly adjacent the narrow blades. 7

Preferably, as shown, the inward ends of the cover flanges or tongues are so formed, as best shown in Figs. 5 and 7, that they are inclined angularly downward and inward, and these faces are also beveled or rounded outwardly away from the vertical side-faces 23 of the tongues, producing edges 24 which slant generally downward and inward; and these edges of the confronting flange ends engage the descending bobbin at opposite sides of the bobbin-barrel, or of the fillet or shoulder connecting the barrel with the inward head face, and thus determine the position of the head through limiting its movement in one direction in the line of the bobbins axis, and prevent the head entering between the stripping blades. The edges 24 receive the bobbin-barrel between them with a proper slight amount of lateral clearance, the plates being adjusted toward or from each other to regulate their fit or clearance at the sides of the bobbin-barrel or fillet, in accordance with the diameter at these points of the particular kind of bobbin in use. The level to which the bobbin descends from the feed-chute as shown in the above mentioned patents and sufiiciently referred to above, is determined by its head, or the head-rings, engaging and coming to rest on the beveled supporting faces 22 of the guide blocks; while the terminal end or butt of the head is positioned in the axial direction toward the guide-blocl s and the barrellocating or guiding edges 24 of the cover flanges, by the shutter 7 as shown in 1, and as also disclosed in Patent No. 1,740,127, or by equivalent means such as a finger piece at the lower end of a head-guard strip associated with the feed-chute, as disclosed in Patent No. 1,740,128, or similar head-locating means such as the auxiliary guard 8 of Fig. 8, associated with a chute-guard structure, as disclosed in my companion application Ser. No. 558,530; or by a movable member on the guard as shown in Patent No. 1,761,695, and such head-locating means may be employed in the machine of Patent No. 1,740,127 with omission of the shutter, as also sufiiciently referred to in my co-pending application above.

The bobbin-head, shoulders, and barrel are thus accurately positioned in relation to the strip-- ping blades and especially to the thin blades 19, so that as the blades are moved convergently, their thin, arcuate and rounded edges are caused to move closely adjacent the inward face of the head, or to engage the fillet between the head and bobbin-barrel, so as to insure the edges of the blades engaging properly with the endportion of the waste carried by the bobbin-barrel as the bobbin is given its relative movement. The bobbins are at the same time properly located in relation to the wide stripping blades 20 which engage and grip the waste at points away from the head. The above-mentioned patents fully disclose means for operating the blades, such means being also suiiicicntly shown in the present drawings; but detailed description of them is omitted since the construction and arrangement are sufficiently understood by reference to said patents.

The edges of the cover-plates also serve to position the bobbin midway between the opposed blades forming a pair of stripping blades, and permit of adjustment to bring about this desired centered relation.

In the alternative form of the invention illustrated in Figs. 9 and 10 is shown an arrangement in which the opposed bobbin-positioning edges 29 corresponding in function to the edges 24 of the cover-plates just described are formed on tongues or fins 30 integral with the base-portion or guidebloc-k proper 32 of the assembly, just as they were in the patents referred to hereinbefore, butyin distinction from these previous structures, the whole guide-block assembly mounted on its supports, the side-members l of the machine frame, with capacity for adjustment of each assembly as a unit toward and from the middle line of the machine, to permit adjustment of the spaced relation between the opposite guiding edges 29 to position bobbins of different diameters and shapes in the requisite relation wit-h the stripping blades. To provide for such adjustment, the base-portions 32 are provided wiLh slo'ls 34: elongated in the direction of extent of the stripper blades, whereby they may be moved in-- wardly or outwardly toward and the middle line of the machine, and secured in adjusted rela-- tion through tightening the bolts 36 occupying such slots and passing into the sidemembers 1. To guide the assemblies during the adjustment, and to maintain them in proper right-angle relation to the bobbin and the side-members, the base-portions 32 are provided with tongues 38 which slide in ways 40 cut for them transversely across the top surface of the side-members 1. This structure has advantages over the adjustable cover-plate structure of Figs. 1 to 8, inclusive, which have been found to maize its employment desirable in certain instances.

The invention provides in a simple and economical manner for very accurate adjustment of the bobbin-head and shoulder positioning or loeating means such as the opposed edges or the cover-tongues or of the tongues integral with the base-portions, in accordance with the length and diameter of the barrel or the location or radius of the fillet, and without disturbing other parts of the mechanism or interfering with the proper mounting, adjustment or operation of the stripping blades. There is thus provided a distinct improvement and advantage over the structures shown in the above patents, in which the bobbin-head locating or positioning means,

' formed or arranged as parts of tongues or flanges carried by the fixed guide-blocks, are located in fixed position on the frame-members and adjust-- ment of which is thereforeimpossibleor relatively diflicult. In the machines as shown in the I patents this adjustment can be effected only by grinding the confronting faces of the base flanges, or providing guide-blocks with flange edge-formations suited for particular types or diameters of bobbin-barrels and heads, and requiring replacement of guide-blocks of which the guiding and positioning faces have become worn in use. As is obvious, in the novel arrangements compensation for wear can be quickly and easily effected, without need for substitution or replacement.

It, will now be understood that the present ducing relative movement between a bobbinand the stripping meansin a stripping action, of adjustable means located in operatively position adjacent the stripping means for a bobbin relative to the latter.

2. In a bobbin-stripping machine, the combination with stripping means and means for producing relative movement between a bobbin and the stripping means in a stripping action, of adjustable means at opposite sides of the bobbin positioning when in stripping position to locate the bobbin, in relation to the stripping means.

3. In a bobbin-stripping machine, the combination with stripping means and means for producing relative movement between a bobbin and the stripping means in a stripping action, of ad justable means at opposite sides of the bobbin when in stripping position to locate the bobbin longitudinally with respect to the stripping means.

4. In a bobbin-stripping machine, the combi nation with stripping means and means for producing relative movement between a bobbin and the stripping means in a stripping action, of admeans at opposite sides of the bobbin when in stripping position to locate the bobbin longitu" dinally in cooperation with bobbin-head engaging means, such locating means being adjustable to fit bobbins of difierent dimensions.

6. In a bobbin-stripping machine, in combination, convergently movable stripping blades, a bobbin-head rest, blade supports, and means adjacent said supports and convergently adjustable to cooperate with a bobbin adjacent its head and position it in relation to the blades.

"7. In a bobbin-stripping machine, in combination with means for advancing a bobbin from an initial position -for a stripping action, convergent-- 1y movable stripping blades, a bobbin-head rest, bladesupports, and means adjacent said sup-- ports and convergently adjustable to cooperate with a bobbin adjacent its head and position it in relation to the blades. r

8. In a bobbin-strippingmachine, in combina tion with means for advancing a bobbin'iroman initial position for stripping action, convergent- 1y movable stripping blades, blade-supports, and plates adjustably mounted on said supports, having portions cooperating with the bobbin-barrel adjaceint the head.

9. In a bobbin-stripping machine, in combination with means for advancing a bobbin from an initial position for a stripping action, convergently movable stripping blades, blade-supports, and

plates adjustably mounted on said supports, re-

taining the blades therein, and havin portions cooperating with the'bobbin-barrel adjacent the head. 1

10. In a bobbin-stripping machine comprising in combination means for advancing a bobbin for a stripping action, oppositely-located blade-supports, blades mounted in the supports for convergent movement, and means carried by the supports and adjustable relatively thereto cooperating with a bobbin-barrel at opposite sides thereof, to position the waste carrying portion of the bobbin in relation to the blades.

11. A bobbin-stripping machine comprisng in combination means for advancing a bobbin for a stripping action, oppositely-located blade-supports, blades mounted in the supports for convergent movement, and adjustable means carried by the supports and cooperating with a bobbinbarrel and the inward face of the head at opposite sides thereof, to position the waste carrying ortion of the bobbin in relation to the blades.

12. A bobbin-strlppin machine comprising in combination means for advancing a bobbin for a stripping action, a bobbin-head rest, oppositely-located bladesupports, blades mounted in the supports for convergent movement, and members mounted on said supports for convergent and divergent adjustment and having confronting downwardly convergent face-formations located at opposite sides of the bobbin-barrel in initial s ripping position.

13. A bobbin-stripping machine comprising in combination means for advancing a bobbin for a stripping action, oppositely-located blade-supports, blades mounted in the supports for convergent movement, and members mounted on said supports for convergent and divergent adjustment and having confronting downwardly convergent edge-formations located at opposite sides of a bobbin-barrel in initial stripping position and cooperating with the barrel and head to position the bobbin in relation to the stripping blades.

14. A bobbin-stripping machine comprising in combination means for advancing a bobbin for a sh .pping action, supports located on opposite sides 01" the bobbin when the latter is in stripping position, stripping blades mounted for convergent movement, and members operatively fixed on said supports for having capacity for relative convergent and divergent adjustment and having confronting face-formations cooperating with the bobbin-barrel to locate the bobbin in relation to the blades.

15. A bobbin-stripping machine comprising in combination means for advancing a bobbin for a stripping action, oppositely-located blade-supports blades mounted in the supports for convergen" .overnent, and cover-plates mounted on said supports for relative convergent and divergent movement, the plates having depending flanges cooperating with the blades to locate and guide them, the flanges having at their inward ends, downwardly convergent formations cooperating with the bobbin-barrel and head or fillet to locate the bobbin in relation to the blades.

16. A stripping blade and bobbin supporting assembly for a bobbin-stripper comprising in combination a guide-block, a cover-plate adjustably mounted thereon and having a flange extending between sidewalls of the block and providing between it and said walls guide-channels for stripper blades mounted therein, the flange hav at its inwardly directed end a downwardly and inwardly inclined face-formation to cooperi. ate with a bobbin-barrel and head or fillet.

1?. A stripping blade and bobbin supporting assembly for a bobbin-stripper of the general charas or described, said assembly comprising a guideblock having spaced sidewalls, a cover-plate overlapping said walls and provided with slots, screws passing through the slots and engaging in the walls for adjustment of the cover-plate toward and from the bobbin when the latter is between the blades, the plate also having a flange located between the block walls and spaced therefrom, the flange having at its inwardly directed end an edge-formation inclined downwardly-inward for cooperation with a bobbin-barrel and head.

18. In a bobbin-stripper, the combination with opposed stripping blades that close upon the bobbin, bobbin-head guiding and supporting means, and means for presenting a bobbin within range of such blades, of means for centering the bobbin with respect to the bla es in advance of its engagement with the blades, adjustable to accord with the varying diameter of different bobbins.

l9. a bobbin-stripper, the combination with opposed stripping blades that close upon the bobbin, bobbin-head guiding and supporting means, and means ror presenting a bobbin within range of such blades, and means for determining the presentation position or" the bobbin in a plane at right angles to the direction of movement of the blades, of for determining the presentation position of the bobbin in the plane of movement of the blades, adjustable to accord with the varying diameters of difierent bobbins.

20. In a bobbin-stripper, in combination, means for advancing a bobbin into stripping position, a bobbin-head rest, opposed stripping blades having bobbin-engaging surfaces conforming to the contour of the bobbin-barrel, devices centering the advanced bobbin with respect to the blades and also positioning the bobbin lengthwise with respect to the blades, and adjustable to suit the shapes of different bobbins.

21. In a bobbin-stripping machine, in combination with means for advancing a bobbin from an initial position for a stripping action, convergently movable stripping blades, blade-supports, and means adjacent said supports and corn vergently adjustable to cooperate with a bobbin head and the portion of the barrel closely adjacent its head and position it in relation to the blades and also in relation to a positioning member cooperating with the bobbin-head.

22. A bobbin-stripping machine comprising in combination for advancing a bobbin for a stripping action, oppositely-located blade-supports, blades mounted in the supports for con vergent movement, and adjustable means carried by the supports and cooperating with a bobbinbarrel and the fillet between the barrel and head at opposite sides of the bobbin, to position the waste carrying portion of the bobbin in relation to the blades.

23. A bobbin-stripping machine comprising in combination means for advancing a bobbin for a stripping action, blade-supports on opposite sides of the bobbin when in initial stripping position, blades mounted in the supports for convergent movement, and members operatively fixed on said supports with capacity for convergent and divergent adjustment and having confronting iacedormations located at opposite si es of the bobbin-barrel in initial stripping position.

24. A bobbin-stripping machine comprising in combination means for advancing a bobbin for a stripping action, oppositely-located blade-supports, blades mounted in the supports for convergent movement, and cover-plates mounted on said supports for relative convergent and divergent movement and having confronting face-for mations cooperating with the bobbin barrel to locate the bobbin in relation to the blades, said plates retaining the blades in position in the supports.

EDGAR A. TERRELL. 

